CVE-2026-28510: eLabFTW is an open source electronic lab notebook

Q: How do I fix CVE-2026-28510?

elabftw: upgrade to 5.4.2. Exact commands for each OS are on this page.

Q: Is CVE-2026-28510 being exploited?

CVE-2026-28510 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-28510 affect?

CVE-2026-28510 affects elabftw. Severity is medium (CVSS 5.9). eLabFTW is an open source electronic lab notebook. In elabftw versions through 5.4.1, the login flow did not reliably preserve the multi-factor authentication state across authentication steps. Under certain conditions, an attacker with val

Q: How urgent is CVE-2026-28510?

Priority 25/100. No elevated risk signals yet.

Routine

MEDIUM 5.9UPGRADE

CVE-2026-28510 is a medium-severity flaw (CVSS 5.9) affecting elabftw. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

eLabFTW is an open source electronic lab notebook. In elabftw versions through 5.4.1, the login flow did not reliably preserve the multi-factor authentication state across authentication steps. Under certain conditions, an attacker with valid primary credentials could complete authentication with an attacker-controlled TOTP secret and bypass the additional factor. This could result in unauthorized account access. This issue is fixed in version 5.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	5.9 (Medium)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	High
User interaction	None
EPSS exploit chance	0.3% (top 83%)
CISA exploited list	No
Weakness	CWE-302
Published	2026-05-05
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: elabftw

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-05-05 13:16 UTCPublished CVE record published
2026-06-17 10:28 UTCUpdated Record last modified

elabftw elabftw UPGRADE

Affected: < 5.4.2

Fixed in: 5.4.2

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy elabftw || rpm -q elabftw || elabftw --version

2. UPGRADE to 5.4.2 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade elabftw

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade elabftw

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-28510?

elabftw: upgrade to 5.4.2. Exact commands for each OS are on this page.

Is CVE-2026-28510 being exploited?

CVE-2026-28510 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-28510 affect?

CVE-2026-28510 affects elabftw. Severity is medium (CVSS 5.9). eLabFTW is an open source electronic lab notebook. In elabftw versions through 5.4.1, the login flow did not reliably preserve the multi-factor authentication state across authentication steps. Under certain conditions, an attacker with val

How urgent is CVE-2026-28510?

Priority 25/100. No elevated risk signals yet.

Related CVEs

CVE-2026-28511 MEDIUM 4.3 UPGRADE eLabFTW is an open source electronic lab notebook

References

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